i have for sale a Novak Smart Boost.
NOVAK NE5474 Smart Boost. 3.7volt to 6volt for receivers.
Boost a single 1S LiPo 3.7volt up to 6 volts to supply the receiver and servos.
6 volt, 3amp output
With on/off switch
Its in good working order
sell £20 posted
Reduced to £18 posted